Pictures of the day: 7 September 2012

Polaris, Storm, Magneto and Juggernaut are not members of a band of superheroes; the fantastic four are a quartet of African pygmy hedgehogs born in Cameron Park Zoo in Waco, Texas. The spiky bundles of joy were born on August 17, the smallest weighing in at 18 grams and the largest 36 grams.Picture: Cameron Park Zoo